@article{Physics.3.65,
  title = {Aiming with bubbles},
  author = {Ohl, Claus-Dieter},
  journal = {Physics},
  volume = {3},
  issue = {},
  pages = {65},
  numpages = {1},
  year = {2010},
  month = {Aug},
  doi = {10.1103/Physics.3.65},
  url = {http://link.aps.org/doi/10.1103/Physics.3.65},
  publisher = {American Physical Society}
}